topic blade console opa0: nobroadcast in Operating System - OpenVMS

blade console opa0: nobroadcast

David Rabahy — Mon, 10 Dec 2012 21:23:38 GMT

Why does the OPA0: terminal device come up /nobroadcast? TTY_DEFCHAR is 402657952 = 180012A0(hex) and the NOBRDCST bit is 20000(hex) so I expect the broadcast characteristic to be enabled. On old VAX and Alpha systems this was not a problem.

Yes, it can be manually set after the system is up with $ SET TERMINAL/BROADCAST and $ SET TERMINAL/BROADCAST/PERMANENT but that's nuisance.

Re: blade console opa0: nobroadcast

John Gillings — Tue, 11 Dec 2012 01:05:27 GMT

Hi David,

There's some logic in VMS$DEVICE_STARTUP.COM which includes the lines:

$if .not. enable_opa0
$then
$ set terminal/permanent/nobroadcast OPA0:
$endif

Maybe you can chase backwards to figure out what enable_opa0 would be on your system. If it's not what you want, try:

$ DEFINE/SYSTEM/EXEC OPC$OPA0_ENABLE TRUE

in SYLOGICALS.COM

Re: blade console opa0: nobroadcast

David Rabahy — Tue, 11 Dec 2012 17:39:16 GMT

Good lead John; it turns out the problem is we have DECwindows configured.